ETE Restinga Wastewater Treatment Plant, Restinga, São Paulo, Brazil

ETE Restinga is a municipal wastewater treatment plant located in Restinga, a municipality in the state of São Paulo, Brazil. The plant serves a population of approximately 5,769 people, classifying it as a small-scale facility within the region's sanitation infrastructure. It operates under Brazil's national environmental regulations, which mandate secondary treatment for urban wastewater to protect water quality. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Secondary treatment is the minimum required by Brazilian law for wastewater discharges into surface waters. The plant's daily discharge volume of 585.84 cubic meters reflects its service to a small community. Treated effluent from ETE Restinga is discharged into local water bodies within the Paraná River basin, which ultimately drains into the Río de la Plata estuary. The plant plays a crucial role in protecting downstream aquatic ecosystems and maintaining water quality in the region's rivers and streams.

The plant discharges into the Paraná River basin, which flows through southeastern Brazil and into the Río de la Plata estuary. This watershed supports diverse aquatic life and provides water for agriculture and urban use. Secondary treatment helps reduce nutrient and organic pollution, mitigating eutrophication risks in downstream water bodies.